They may be small, but they build big things! Coral(珊瑚虫), which live in the warm parts of the Earth's oceans, are probably the biggest builders on the planet. Coral polyps turn calcium(钙)from seawater into a kind of hard stone. Slowly, they build up a hard skeleton(外骨骼)around their bodies. When polyps die, their skeletons remain. Young polys attach themselves to the old skeletons and make new skeletons. Over time, various shapes are slowly built up into amazing coral reefs(珊瑚礁).
Scientists sometimes think of coral reefs as underwater cities. There are nearly a thousand coral species. Reefs are also home to millions of sea creatures, like fish, crabs, turtles, and sharks.
Humans don't live in coral reef cities, but we get a lot from them. Reefs create jobs for people in the fishing industry and other related businesses. They also supply us with food. Reefs protect our coasts-the coral slows waves down and protects beaches from wearing. Chemicals from reef creatures help scientists create new medicines, which help doctors treat different illnesses.
Coral reefs are very important, yet we don’t take good care of them. Environmental problems have already killed about twenty percent of the world’s reefs. About half of the remaining reefs are dying, and experts believe all of Earth's coral reefs will be in danger by 2050.
People catch too many reef fish and often damage the reefs. Polluted water also causes problems because reef-destroying algae(海藻)grow in dirty water. Even air pollution hurts coral reefs. Global warming causes warmer ocean water, which can cause polyps to lose helpful algae. Without the algae, coral turns white. If it continues, the coral dies.
Can we save coral reefs? Experts say yes-if we make hard choices. Many people around the world are working to protect reefs. Humans and coral polyps are very different, but we both build amazing cities. We will both win if people protect our beautiful oceans.
1.What can be learned about coral reefs?
A.They turn calcium into stones. B.They can be found in cold waters.
C.They provide food for coral polyps. D.They are formed by the growth of coral
2.How do coral reefs help humans?
A.By taking in pollution. B.By protecting beaches.
C.By improving the environment. D.By giving out important chemicals.
3.The helpful algae give coral its .
A.hardness B.size C.color D.shape
4.What would be the best title for the text?
A.Cities in the sea B.Reefs in trouble
C.Why are reefs important? D.How can we protect coral reefs?
高一英语阅读理解中等难度题
They may be small, but they build big things! Coral(珊瑚虫), which live in the warm parts of the Earth's oceans, are probably the biggest builders on the planet. Coral polyps turn calcium(钙)from seawater into a kind of hard stone. Slowly, they build up a hard skeleton(外骨骼)around their bodies. When polyps die, their skeletons remain. Young polys attach themselves to the old skeletons and make new skeletons. Over time, various shapes are slowly built up into amazing coral reefs(珊瑚礁).
Scientists sometimes think of coral reefs as underwater cities. There are nearly a thousand coral species. Reefs are also home to millions of sea creatures, like fish, crabs, turtles, and sharks.
Humans don't live in coral reef cities, but we get a lot from them. Reefs create jobs for people in the fishing industry and other related businesses. They also supply us with food. Reefs protect our coasts-the coral slows waves down and protects beaches from wearing. Chemicals from reef creatures help scientists create new medicines, which help doctors treat different illnesses.
Coral reefs are very important, yet we don’t take good care of them. Environmental problems have already killed about twenty percent of the world’s reefs. About half of the remaining reefs are dying, and experts believe all of Earth's coral reefs will be in danger by 2050.
People catch too many reef fish and often damage the reefs. Polluted water also causes problems because reef-destroying algae(海藻)grow in dirty water. Even air pollution hurts coral reefs. Global warming causes warmer ocean water, which can cause polyps to lose helpful algae. Without the algae, coral turns white. If it continues, the coral dies.
Can we save coral reefs? Experts say yes-if we make hard choices. Many people around the world are working to protect reefs. Humans and coral polyps are very different, but we both build amazing cities. We will both win if people protect our beautiful oceans.
1.What can be learned about coral reefs?
A.They turn calcium into stones. B.They can be found in cold waters.
C.They provide food for coral polyps. D.They are formed by the growth of coral
2.How do coral reefs help humans?
A.By taking in pollution. B.By protecting beaches.
C.By improving the environment. D.By giving out important chemicals.
3.The helpful algae give coral its .
A.hardness B.size C.color D.shape
4.What would be the best title for the text?
A.Cities in the sea B.Reefs in trouble
C.Why are reefs important? D.How can we protect coral reefs?
高一英语阅读理解中等难度题查看答案及解析
As teenagers get older, they struggle to be ________, but at the same time, they may badly want and need their parents’ love.
A. patient B. brilliant
C. independent D. tolerant
高一英语单项填空简单题查看答案及解析
Knowledge and learning are important if we want to be successful, but they may also ______ our thinking.
| A．direct | B．limit | C．change | D．improve |
高一英语单项填空中等难度题查看答案及解析
Knowledge and learning are important if we want to be successful, but they may also ________our thinking.
A．direct B．limit C．change D．improve
高一英语单项填空中等难度题查看答案及解析
Knowledge and learning are important if we want to be successful, but they may also __________ our thinking.
A. direct B. limit C. change D. improve
高一英语单项填空中等难度题查看答案及解析
Mr. and Mrs. Turner live outside a small town. They have a big farm and they are always busy working on it. Their son, Peter, studied at a middle school. The young man studied hard and did well in his lessons. It made them happy.
Last month Peter finished middle school and passed the entrance examination (升学考试). Mrs. Turner was very happy and told the farmers about it.
Yesterday morning the woman went to the town to buy something for her son. On the bus she told one of her friends how clever and able her son was. She spoke very loudly. All the people in the bus began to listen to her.
“Which university (大学) will your son study in?” a woman next to her asked.
“In the most famous university in our country!” Mrs. Turner said happily.
“The most famous university?”
“Oxford University (牛津).”
Most of the passengers (乘客) looked at her carefully. Some of them said to her, “Congratulations!”
A woman said, “I'm sure he'll know Fred Smith.”
“Who's Fred Smith?”
“He's my son.”
“Does he study in the university, too?”
“No, ”said the woman. “He is one of the professors.”
1.The story happened in ________.
A. America B. France C. Germany D. England
2.Mr. and Mrs. Turner were happy because ________.
A. their son did well in his lessons
B. they have a big farm
C. they have a good harvest
D. their son studied at a middle school
3.Mrs. Turner wanted everyone to know ________.
A. her son finished middle school
B. her son was handsome
C. her son was going to study in a university
D. her son was very friendly to others
4. Mrs. Turner spoke so loudly in the bus that __________.
A. her friend could hear her
B. all the people could hear her
C. she hoped to make all the people happy
D. she hoped they would say congratulations to her
5.Which of the following is true? __________.
A. The woman wasn't interested in Mrs. Turner's words
B. Mrs. Turner knew nothing about the famous university
C. The woman wanted to stop Mrs. Turner from showing off (炫耀)
D. The woman next to Mrs. Turner wanted to show off her son, too
高一英语阅读理解中等难度题查看答案及解析
In that big earthquake all their houses were____ , so they had to build new ones.?
A. hurt B.harmed
C.destroyed D. injured
高一英语单项填空中等难度题查看答案及解析
In the big earthquake all their houses were ______, so they had to build new ones.
A. hurt B. harmed C. injured D. destroyed
高一英语单项填空中等难度题查看答案及解析
In that big earthquake all their houses were ________, so they had to build new ones.
| A．hurt | B．harmed | C．injured | D．destroyed |
高一英语单项填空简单题查看答案及解析
In that big fire all their houses were______, so they had to build new ones.
A. hurt B. harmed C. injured D. destroyed
高一英语单项填空中等难度题查看答案及解析